(19)
(11) EP 3 552 971 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
12.02.2020 Bulletin 2020/07

(43) Date of publication A2:
16.10.2019 Bulletin 2019/42

(21) Application number: 19164870.8

(22) Date of filing: 25.03.2019
(51) International Patent Classification (IPC): 
B64D 27/24(2006.01)
H02K 9/08(2006.01)
F25J 1/00(2006.01)
F02C 6/08(2006.01)
F25J 3/04(2006.01)
 B64D 33/08(2006.01)
F17C 5/02(2006.01)
B64D 13/06(2006.01)
B64D 37/32(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 23.03.2018 US 201862647055 P
23.03.2018 US 201862647060 P
06.04.2018 US 201862653599 P
06.04.2018 US 201862653602 P
06.04.2018 US 201862653604 P
12.04.2018 US 201862656451 P
12.04.2018 US 201862656453 P

(71) Applicant: United Technologies Corporation
Farmington, CT 06032 (US)

(72) Inventors:
  • SCHWARZ, Frederick M.
    Glastonbury, CT Connecticut 06033 (US)
  • WINTER, Michael
    New Haven, CT Connecticut 06515 (US)

(74) Representative: Dehns 
St. Bride's House 10 Salisbury Square
London EC4Y 8JD
London EC4Y 8JD (GB)

   


(54) PROPULSION SYSTEM COOLING CONTROL


(57) A propulsion system includes an electric fan propulsion motor (818) with a plurality of propulsion motor windings (820). The propulsion system also includes a means for controlling a flow rate of a working fluid (3206) through a cryogenic working fluid flow control assembly (3204) to the propulsion motor windings (820).







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Search report